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feat(userspace/coreutils): add test command

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Signed-off-by: EnderIce2 <enderice2@protonmail.com>
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EnderIce2 2025-03-16 00:00:09 +00:00
parent 201ace7eec
commit 5af9c9b0a2
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1 changed files with 128 additions and 0 deletions
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Userspace/coreutils/src/test.c Normal file
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/*
This file is part of Fennix Core Utilities.
Fennix Core Utilities is free software: you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation, either version 3 of
the License, or (at your option) any later version.
Fennix Core Utilities is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Fennix Core Utilities. If not, see <https://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
static int TestFile(const char *path, char mode)
{
struct stat st;
if (stat(path, &st) != 0)
return 1;
switch (mode)
{
case 'b':
return S_ISBLK(st.st_mode) ? 0 : 1;
case 'c':
return S_ISCHR(st.st_mode) ? 0 : 1;
case 'd':
return S_ISDIR(st.st_mode) ? 0 : 1;
case 'e':
return 0;
case 'f':
return S_ISREG(st.st_mode) ? 0 : 1;
case 'g':
return (st.st_mode & S_ISGID) ? 0 : 1;
case 'h':
case 'L':
return lstat(path, &st) == 0 && S_ISLNK(st.st_mode) ? 0 : 1;
case 'p':
return S_ISFIFO(st.st_mode) ? 0 : 1;
case 'r':
return access(path, R_OK) == 0 ? 0 : 1;
case 's':
return st.st_size > 0 ? 0 : 1;
case 'u':
return (st.st_mode & S_ISUID) ? 0 : 1;
case 'w':
return access(path, W_OK) == 0 ? 0 : 1;
case 'x':
return access(path, X_OK) == 0 ? 0 : 1;
default:
return 2;
}
}
static int TestString(const char *s1, const char *op, const char *s2)
{
if (!strcmp(op, "="))
return strcmp(s1, s2) == 0 ? 0 : 1;
if (!strcmp(op, "!="))
return strcmp(s1, s2) != 0 ? 0 : 1;
if (!strcmp(op, "<"))
return strcmp(s1, s2) < 0 ? 0 : 1;
if (!strcmp(op, ">"))
return strcmp(s1, s2) > 0 ? 0 : 1;
return 2;
}
static int TestInteger(const char *n1, const char *op, const char *n2)
{
int i1 = atoi(n1), i2 = atoi(n2);
if (!strcmp(op, "-eq"))
return i1 == i2 ? 0 : 1;
if (!strcmp(op, "-ne"))
return i1 != i2 ? 0 : 1;
if (!strcmp(op, "-gt"))
return i1 > i2 ? 0 : 1;
if (!strcmp(op, "-ge"))
return i1 >= i2 ? 0 : 1;
if (!strcmp(op, "-lt"))
return i1 < i2 ? 0 : 1;
if (!strcmp(op, "-le"))
return i1 <= i2 ? 0 : 1;
return 2;
}
int main(int argc, char *argv[])
{
int isBracketForm = strcmp(argv[0], "[") == 0;
if (isBracketForm)
{
if (argc < 2 || strcmp(argv[argc - 1], "]") != 0)
{
fprintf(stderr, "Error: missing closing bracket ']'.\n");
return 2;
}
argc--;
}
if (argc == 1)
return 1;
if (argc == 2)
return argv[1][0] ? 0 : 1;
if (argc == 3)
{
if (!strcmp(argv[1], "!"))
return argv[2][0] ? 1 : 0;
return TestFile(argv[2], argv[1][1]);
}
if (argc == 4)
{
if (!strcmp(argv[1], "!"))
return !main(3, &argv[1]);
if (strchr("=!\"><", argv[2][0]))
return TestString(argv[1], argv[2], argv[3]);
return TestInteger(argv[1], argv[2], argv[3]);
}
return 2;
}